Estimating Population Samples Methods

Estimating Population Samples Methods

1. Scaling up Smaller Samples

   • Quadrat
     • Divides an Area
     • Grid
   • Multiply number counted by area of habitat

2. Capture-Recapture

   • Capture and Mark Organisms
   • Capture the same number
   • Count number of Marked Organisms
   • Population Size = (No in 1st x No in 2nd) / No in 2nd Marked

3. Other Notes

   • Sample Size affects Accuracy
   • Using Capture-Recapture Data
     • Assume no death or changes in Pop Size
     • Assume Sampling Methods exactly the same
     • Assume Marking hasn't affected the Organisms survival chances
   • Population - All organisms of one species in a habitat
   • Community - Population of more than one species in a habitat